Overclocking by changing these resistors is possible. But the dockstar might get unreliable! Maybe it will help to increase the core voltage. A bit more interesting is it to reduce the core voltage to reduce the power consumption. Mine is working at around 0,8V 1 GHz for almost 70 days by now. I think I'll have to add this to the GSG-Elektronik.de website.by omega - Debian
Have you tried other baudrates? When you connect it to the serial port of your PC you have to use a level shifter because the RS232 levels will kill the CPU.by omega - uBoot
I think you'll have to reprogram the Bootloader via JTAG.by omega - uBoot